WO2016196491A1 - Apparatus for tightening threaded fasteners - Google Patents

Apparatus for tightening threaded fasteners Download PDF

Info

Publication number
WO2016196491A1
WO2016196491A1 PCT/US2016/035062 US2016035062W WO2016196491A1 WO 2016196491 A1 WO2016196491 A1 WO 2016196491A1 US 2016035062 W US2016035062 W US 2016035062W WO 2016196491 A1 WO2016196491 A1 WO 2016196491A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive
engagement means
drive plate
link
threaded fastener
Prior art date
Application number
PCT/US2016/035062
Other languages
English (en)
French (fr)
Inventor
Peter Koppenhoefer
Original Assignee
HYTORC Division Unex Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HYTORC Division Unex Corporation filed Critical HYTORC Division Unex Corporation
Priority to AU2016271344A priority Critical patent/AU2016271344B2/en
Priority to CN201680038549.7A priority patent/CN107810090B/zh
Priority to EP16728536.0A priority patent/EP3302879B1/en
Priority to EA201792672A priority patent/EA038426B1/ru
Priority to MX2017015379A priority patent/MX2017015379A/es
Priority to US15/577,875 priority patent/US11426844B2/en
Priority to JP2017562038A priority patent/JP7088675B2/ja
Priority to BR112017025618-5A priority patent/BR112017025618B1/pt
Publication of WO2016196491A1 publication Critical patent/WO2016196491A1/en
Priority to HK18104940.3A priority patent/HK1245720A1/zh

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
    • B25B21/005—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type driven by a radially acting hydraulic or pneumatic piston

Definitions

  • a hydraulic torque wrench of the prior art including an actuator and a ratchet linkage. These two components may be modular so they can be coupled and decoupled depending on their desired use.
  • actuators may include one or more hydraulic cylinders and pistons. With the actuator installed on the linkage, a free end of the actuator's piston pivotally connects to a drive lever inside the linkage. As the piston moves reciprocally, it pushes this drive lever back and forth. In turn, a ratchet mechanism formed between the drive lever and a socket causes the socket to rotate and apply torque to the threaded fastener disposed in the socket.
  • the face tooth ratchet assembly includes: a drive plate having piston engagement means at a first end and a machined face gear with radial serrations at a second end; and a ratchet drive having a machined face gear with corresponding radial serrations at a first end and a threaded fastener engagement means at a second end.
  • the low clearance face tooth ratchet assembly minimizes volume and mass of the tool. Only one drive plate is necessary which is tapered from a first end to a second end. Further, side plates of the link drive means are tapered from a first end to a second end. Such geometry minimizes the width of portions of the link drive means making the second end, adjacent the threaded fastener engagement means, substantially thinner than the first end, adjacent the piston engagement means. Higher torque values are transferred in a smaller enclosure via only two parts. Notably no drive and/or reaction pawl is necessary as the teeth of the drive plate and the ratchet drive achieve full facial engagement.
  • the design of the connection coupling is backlash-free, maximizes tool safety, minimizes risk of failures/fatigue from wear, bending, scuffing and cracking, and is suitable for changing forces.
  • FIGs. 1A-1 D show perspective, front, side and back views of a hydraulic torque wrench having a low clearance face tooth ratchet assembly according to the present invention
  • FIGs. 2A-2C show perspective, side and front views of internal components of the link drive means of the hydraulic torque wrench having the low clearance face tooth ratchet assembly according to the present invention
  • FIGs. 3A-3B show perspective views of the low clearance face tooth ratchet assembly according to the present invention
  • FIGs. 4A-4D show perspective views of a drive plate and a ratchet drive of the low clearance face tooth ratchet assembly according to the present invention
  • FIGs. 5A-5F show perspective, front, detailed, side and back views of the drive plate of the low clearance face tooth ratchet assembly according to the present invention
  • FIGs. 6A-6D show perspective, front, side and cross-sectional views of the ratchet drive of the low clearance face tooth ratchet assembly according to the present invention
  • FIGs. 7A-7D show perspective, front and side views of a wave spring of the hydraulic torque wrench having the low clearance face tooth ratchet assembly according to the present invention
  • FIGs. 8A-8D show perspective, back, cross-sectional and side views of a side plate of the hydraulic torque wrench having the low clearance face tooth ratchet assembly according to the present invention.
  • FIGs. 9-10 show various views of examples of spacers of the hydraulic torque wrench having the low clearance face tooth ratchet assembly according to the present invention.
  • FIGs. 1 A-1 D show perspective, front, side and back views of a low clearance face tooth ratchet assembly 100 for a hydraulic torque tool 1 having a cylinder-piston means 10 and a link drive means 50.
  • FIGs. 2A-2C show perspective, side and front views of internal components of link drive means 50 of hydraulic torque tool 1 having low clearance face tooth ratchet assembly 100.
  • Face tooth ratchet assembly 100 which includes a drive plate 110 having piston engagement means 1 12 at a first end 1 1 1 and a machined face gear 1 16 with radial serrations 1 17 at a second end 1 15.
  • Face tooth ratchet assembly 100 also includes a ratchet drive 120 having a machined face gear 122 with corresponding radial serrations 123 at a first end 121 and a threaded fastener engagement means 126 at a second end 125.
  • Face tooth ratchet assembly 100 is formed between and moves within a first and a second side plate 51 and 52 of link drive means 50 held rigidly apart by a first, a second a third and a fourth spacer 53, 54, 55 and 56.
  • FIGs. 2A-2C indicate that drive plate 1 10 is reciprocatingly driven by a first and a second hydraulic piston 1 1 and 12 in a first and a second cylinder 13 and 14 (not shown in detail) in advance and retract strokes.
  • Drive plate 1 10 oscillates axially about a turning force axis A.
  • the advance stroke the corresponding teeth 1 17 and 123 of drive plate 110 and ratchet drive 120 engage under load from a wave spring 130 to tighten or loosen the threaded fastener.
  • Wave spring 130 offers similar force and deflection as ordinary coil/compression springs yet fits in the tight radial and axial space of tool 1 .
  • Wave spring 130 is formed between drive plate 1 10 and side plate 52.
  • corresponding teeth 1 17 and 123 of drive plate 1 10 and ratchet drive 120 disengage and glide past each other.
  • corresponding teeth 1 17 and 123 of drive plate 1 10 and ratchet drive 120 nonrotatably engage relative to each other.
  • Transmitted torque is proportional to the circumferential force, which is maximized compared with ratchet assemblies of the prior art.
  • the angular surfaces of the teeth transmit a large portion of the circumferential force with positive locking.
  • Tensioning media such as, for example, disk (wave) springs, apply the required axial force to lock the teeth into torque transfer engagement.
  • the teeth mesh around a ring and the torque capacity of the teeth increases with their diameter, arranged to accommodate the threaded fastener.
  • asymmetrical teeth are used with variable profile angles.
  • the coupling is defined by the groove count, the outer diameter of the cylindrical feature, the bottom angle of the grooves (to the axis of the cylindrical feature) and their depth.
  • FIGs. 3-10 show various views and more detail of components of low clearance face tooth ratchet assembly 100 and/or torque tool 1.
  • connection coupling is backlash-free, maximizes tool safety, minimizes risk of failures/fatigue from wear, bending, scuffing and cracking, and is suitable for changing forces.
  • the figures show face tooth ratchet link assembly 100 for use in low clearance hydraulic tools but may be adapted for use in square drive tools and links for use with both such tools powered either electrically, hydraulically, manually or pneumatically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Clamps And Clips (AREA)
PCT/US2016/035062 2015-05-29 2016-05-31 Apparatus for tightening threaded fasteners WO2016196491A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
AU2016271344A AU2016271344B2 (en) 2015-05-29 2016-05-31 Apparatus for tightening threaded fasteners
CN201680038549.7A CN107810090B (zh) 2015-05-29 2016-05-31 用于拧紧螺纹紧固件的装置
EP16728536.0A EP3302879B1 (en) 2015-05-29 2016-05-31 Apparatus for tightening threaded fasteners
EA201792672A EA038426B1 (ru) 2015-05-29 2016-05-31 Устройство для затягивания резьбовых соединений
MX2017015379A MX2017015379A (es) 2015-05-29 2016-05-31 Aparato de apriete de sujetadores roscados.
US15/577,875 US11426844B2 (en) 2015-05-29 2016-05-31 Apparatus for tightening threaded fasteners
JP2017562038A JP7088675B2 (ja) 2015-05-29 2016-05-31 螺条付き締結具を締める装置
BR112017025618-5A BR112017025618B1 (pt) 2015-05-29 2016-05-31 Aparelho para apertar fixadores roscados
HK18104940.3A HK1245720A1 (zh) 2015-05-29 2018-04-17 用於擰緊螺紋緊固件的裝置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562168008P 2015-05-29 2015-05-29
US62/168,008 2015-05-29

Publications (1)

Publication Number Publication Date
WO2016196491A1 true WO2016196491A1 (en) 2016-12-08

Family

ID=56118061

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2016/035062 WO2016196491A1 (en) 2015-05-29 2016-05-31 Apparatus for tightening threaded fasteners

Country Status (10)

Country Link
US (1) US11426844B2 (zh)
EP (1) EP3302879B1 (zh)
JP (1) JP7088675B2 (zh)
CN (1) CN107810090B (zh)
AU (1) AU2016271344B2 (zh)
BR (1) BR112017025618B1 (zh)
EA (1) EA038426B1 (zh)
HK (1) HK1245720A1 (zh)
MX (1) MX2017015379A (zh)
WO (1) WO2016196491A1 (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4794826A (en) * 1986-01-27 1989-01-03 Franks Neal S Hydraulic powered wrench
US5531549A (en) * 1989-07-28 1996-07-02 Great Bay Tool Corporation Auto-lock drill chuck
US20060254393A1 (en) * 2003-07-18 2006-11-16 Masakazu Nagata Ratchet wrench and method of assembling the same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5450773A (en) * 1992-08-18 1995-09-19 Madison Marketing Corporation Powered reversing ratchet driver
AU2149197A (en) * 1996-01-19 1997-08-11 Engelbert Gmeilbauer Ratchet spanner
US6260444B1 (en) 1999-06-23 2001-07-17 John K. Junkers Power tool
US20040089106A1 (en) * 2002-11-12 2004-05-13 Wolfe Sandra C. Compact high-torque ratchet wrench
US7454997B2 (en) * 2003-01-08 2008-11-25 Snap-On Incorporated Axial pawl ratchet mechanism
US7062992B2 (en) * 2004-10-29 2006-06-20 Norwolf Tool Works Constant rotation rotary torque multiplier
US7146880B1 (en) * 2004-12-06 2006-12-12 Francis Services, Inc. Torque wrench system
US7451672B2 (en) * 2006-01-11 2008-11-18 Jetyd Corp. Link attachment to torque wrench
WO2013032963A1 (en) * 2011-08-26 2013-03-07 HYTORC Division Unex Corporation Apparatus for tightening threaded fasteners

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4794826A (en) * 1986-01-27 1989-01-03 Franks Neal S Hydraulic powered wrench
US5531549A (en) * 1989-07-28 1996-07-02 Great Bay Tool Corporation Auto-lock drill chuck
US20060254393A1 (en) * 2003-07-18 2006-11-16 Masakazu Nagata Ratchet wrench and method of assembling the same

Also Published As

Publication number Publication date
BR112017025618B1 (pt) 2022-07-05
AU2016271344B2 (en) 2021-06-03
US11426844B2 (en) 2022-08-30
EA201792672A1 (ru) 2018-04-30
EA038426B1 (ru) 2021-08-27
CN107810090B (zh) 2021-11-23
JP2018517577A (ja) 2018-07-05
US20180133869A1 (en) 2018-05-17
JP7088675B2 (ja) 2022-06-21
BR112017025618A2 (pt) 2018-08-07
HK1245720A1 (zh) 2018-08-31
CN107810090A (zh) 2018-03-16
EP3302879B1 (en) 2021-03-10
EP3302879A1 (en) 2018-04-11
AU2016271344A1 (en) 2018-01-18
MX2017015379A (es) 2018-03-15

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